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Finding the Fourth Proportional to 133,787.80, 200,511.60 and 54,812.80

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Solution

The fourth proportional to 133,787.80, 200,511.60 and 54,812.80 is: 82,149.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,787.80 : 200,511.60 = 54,812.80 : x
  2. Step 2: Convert to fraction form
    133,787.80/200,511.60 = 54,812.80/x
  3. Step 3: Cross multiply
    133,787.80x = 200,511.60 × 54,812.80
  4. Step 4: Simplify right side
    133,787.80x = 10,990,602,228.48
  5. Step 5: Solve for x
    x = 10,990,602,228.48/133,787.80
  6. Step 6: Final answer
    x = 82,149.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.